Home / 20,567.88-28,380.62-11,615.22

Finding the Fourth Proportional to 20,567.88, 28,380.62 and 11,615.22

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Solution

The fourth proportional to 20,567.88, 28,380.62 and 11,615.22 is: 16,027.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.88 : 28,380.62 = 11,615.22 : x
  2. Step 2: Convert to fraction form
    20,567.88/28,380.62 = 11,615.22/x
  3. Step 3: Cross multiply
    20,567.88x = 28,380.62 × 11,615.22
  4. Step 4: Simplify right side
    20,567.88x = 329,647,086.96
  5. Step 5: Solve for x
    x = 329,647,086.96/20,567.88
  6. Step 6: Final answer
    x = 16,027.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.